/*
 * Copyright (C) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.xuexiang.xui_lib.component.edittext.materialedittext.validation;

/**
 * TextUtils
 *
 * @since 2021-03-24
 */
public class TextUtils {
    /**
     * isEmpty
     *
     * @param str
     * @return boolean
     */
    public static boolean isEmpty(CharSequence str) {
        return str == null || str.length() == 0;
    }

    /**
     * equals
     *
     * @param a1
     * @param b1
     * @return boolean
     */
    public static boolean equals(CharSequence a1, CharSequence b1) {
        if (a1 == null || b1 == null) {
            return false;
        }
        if (a1 == b1) {
            return true;
        }
        int length = a1.length();
        if (length == b1.length()) {
            if (a1 instanceof String && b1 instanceof String) {
                return a1.equals(b1);
            } else {
                for (int i1 = 0; i1 < length; i1++) {
                    if (a1.charAt(i1) != b1.charAt(i1)) {
                        return false;
                    }
                }
                return true;
            }
        }
        return false;
    }
}
